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Squared Upper - Printable Version

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Pages: 1 2

Squared Upper - am4966 - 01-15-2015

^^^^LOL^^^^ let me put mags on the list��

Squared Upper - smokinghole - 01-15-2015

So I have a question about the lapping tool. I'm considering an Aero Precision COP upper for the build I'm wanting to do. How would one square up the barrel mount, if out of square, with a permanent monolithic rail in the way? What would be the best way to stand off from the tool face? I imagine a drill press might be useful in this application because the chuck is skinnier than my hand held drill.

Squared Upper - molar - 01-15-2015

PrecisionFirearms Wrote:I guarantee our's are square. But then our's are billet and they should be.

Precision Firearms

I thought you only sold barreled uppers. Didn't realize you sold stripped uppers. Will have to check them out.

Squared Upper - NugginFutz - 01-15-2015

smokinghole Wrote:So I have a question about the lapping tool. I'm considering an Aero Precision COP upper for the build I'm wanting to do. How would one square up the barrel mount, if out of square, with a permanent monolithic rail in the way? What would be the best way to stand off from the tool face? I imagine a drill press might be useful in this application because the chuck is skinnier than my hand held drill.

MidwayUSA sells the Wheeler version, which has a flexible shaft. I believe this would allow a drill to drive the lapping tool while offset enough to clear the upper.

[Image: 821295.jpg]

http://www.midwayusa.com/product/821295/wheeler-engineering-delta-series-upper-receiver-lapping-tool-ar-15?cm_vc=ProductFinding

Squared Upper - smokinghole - 01-15-2015

Sweet. Thanks for the,heads up. I am new to the build process and didnt know about the flex shaft version.

Squared Upper - am4966 - 01-15-2015

I have a wheeler lapping tool, haven't used it yet. Still gathering parts to complete my build. Plus waiting for my NFA Tax Stamp before putting together after I get the parts.

Squared Upper - spectra - 03-16-2015

So do people like the wheeler tool? I was wondering with the extension if it was sloppy or ? I know sometimes those extensions are not so great. Looking at ordering one and well Brownells is OOS on a item I want and Midway has it but sells the wheeler unit. I don't want to pay shipping on 2 orders.....

Squared Upper - rwh - 03-16-2015

I bought on of Mark's side charging uppers and received it last week. The upper is flawless.

Squared Upper - Bwild97 - 03-16-2015

spectra Wrote:So do people like the wheeler tool? I was wondering with the extension if it was sloppy or ? I know sometimes those extensions are not so great. Looking at ordering one and well Brownells is OOS on a item I want and Midway has it but sells the wheeler unit. I don't want to pay shipping on 2 orders.....

I love the wheeler lapping tool, as previously stated...lube the tail shaft!

Squared Upper - 2_speed - 03-16-2015

So..if you're not gonna use Ceracoat or something, what finish does the hoard recommend if you have to remove enough material to get through the anodizing to bare aluminum to get sq
Cheers!
Tom

Squared Upper - NugginFutz - 03-16-2015

2_speed Wrote:So..if you're not gonna use Ceracoat or something, what finish does the hoard recommend if you have to remove enough material to get through the anodizing to bare aluminum to get sq
Cheers!
Tom

Tom,

If you do lap an upper to square the face, you most certainly will remove the anodizing and expose the aluminum - it's an unavoidable part of the process. Nobody I am aware of does anything to re-coat or anodize the upper, afterwards. All I've done was to wipe it with a bit of grease or a light film of Slip 2000 EWL.

The general consensus seems to be that while ceracoating or finishes are pretty, rubbed bare spots are nothing to fear. I seem to remember a picture someone shared of an issue weapon that had been rubbed silly with a scotch brite pad.

Squared Upper - 2_speed - 03-16-2015

Yeah, some of my toys do show some pretty obvious signs of wear...
If I do square one up, I'll probably use some kind of flat finish paint.
Thanks.
Tom